Differences Between Second and First Inflation 2nd inflation: no known physical explanation. Why ? so small? Most natural value for a constant ? is ?Planck density?, which is 10120 times bigger than seen. 2nd inflation occurs at much lower energy density 2nd inflation started recently (only ~1 doubling so far; 1st had >100) 1st inflation was temporary ? the scalar field decayed into matter and inflation stopped Future of 2nd inflation is unknown because it?s so recent. Will dark energy decay or be forever constant? We don?t know.
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limit of cosmic knowledge : Talk by Sandra M. Faber on 11-Dec'12
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